Cylinder of a rotary printing machine
View Patent ↗In order to manufacture a cylinder of a rotary printing machine cost-effectively, its cylinder body is assembled from a cylinder casing and a first and second side part located at the ends of the cylinder casing, one and the same first and second side part being capable of being completed in order to produce different cylinders casings of different outside diameters.
1. A cylinder for a rotary printing machine comprising:
a cylinder casing; and
first and second side parts disposed at opposite ends of said cylinder casing attached therewith and defining with said side parts a cylinder body assembly, said first side part having a first outer diameter and said second side part having a second outer diameter, said second diameter being larger than said first diameter, said cylinder casing being one selected from a plurality of cylinder casings of different outside diameters to each of which said side parts can be attached, wherein an outer diameter of said cylinder casing is greater than or equal to said first diameter and less than said second diameter; and
first and second journals respectively connected to said first and second side parts.
2. A cylinder according to claim 1 , wherein each of said side parts has a collar, the collars bearing against respective ones of the ends of said cylinder casing and being screwed thereto, said side parts being centered coaxially with said cylinder casing in a fit therewith wherein outside diameter structure on one of said side parts and said cylinder casing engages with inside diameter structure on a other one of said side parts and said cylinder casing.
3. A cylinder according to claim 1 , comprising:
external cone surfaces on one of said side parts and said cylinder casing, and internal cone surfaces on a other of said side parts and said cylinder casing, said side parts being screwed to said cylinder casing to urge the external cone surfaces into engaged pairing with the internal cone surfaces.
4. A cylinder according to claim 2 , wherein said collars are screwed to end faces of the cylinder casing with screws.
5. A cylinder according to claim 3 , wherein said collars are screwed to end faces of the cylinder casing with screws.
6. A cylinder according to claim 2 , wherein each of said side parts has an externally threaded shoulder, said cylinder casing having internal threaded surfaces with which said external threaded shoulders are engageable for screwing said side parts to said cylinder casing.
7. A cylinder according to claim 3 , wherein each of said side parts has an externally threaded shoulder, said cylinder casing having internal threaded surfaces with which said external threaded shoulders are engageable for screwing said side parts to said cylinder casing.
8. A cylinder according to claim 1 , comprising:
a first journal including a hub and a rod, said hub being disposed at an outer end of said first side part, said rod passing through a center bore in said first side part and through a center bore in said second side part;
a second journal including a hub, said second journal hub being disposed at an outer end of said second side part; and
a tightening screw passing through a center bore of said second side part and engaging threads in a bore of said first journal rod for urging said first and second journals against the outer ends of the said first and second parts, respectively.